Recovery of coal liquefaction catalysts

Details Recovery of coal liquefaction catalysts Recovery of coal liquefaction catalysts

1981-11-04

1983-11-29

Wright, William G.

Mineral oils: processes and products

Products and compositions

Lubricating oils

423 61, 423 62, 423 68, 423 22, 423 49, 502 22, C10G 108, C10G 3714, C10G 3100, B01J 3700

Patent

active

044179723

ABSTRACT:
Metal constituents are recovered from the heavy bottoms produced during the liquefaction of coal and similar carbonaceous solids in the presence of a catalyst containing a metal capable of forming an acidic oxide by burning the heavy bottoms in a combustion zone at a temperature below the fusion temperature of the ash to convert insoluble metal-containing catalyst residues in the bottoms into soluble metal-containing oxides; contacting the oxidized solids formed in the combustion zone with an aqueous solution of a basic alkali metal salt to extract the soluble metal-containing oxides in the form of soluble alkali metal salts of the metal-containing oxides and recycling the soluble alkali metal salts to the liquefaction zone. In a preferred embodiment of the invention, the bottoms are subjected to partial oxidation, pyrolysis, coking, gasification, extraction or a similar treatment process to recover hydrocarbon liquids and/or gases prior to the burning or combustion step.

REFERENCES:
patent: 3214346 (1965-10-01), Mason et al.
patent: 3539290 (1970-11-01), Erickson
patent: 3813329 (1974-05-01), Gatsis
patent: 3826809 (1974-07-01), Hardwich et al.
patent: 3923634 (1975-12-01), Silvestri et al.
patent: 4145397 (1979-03-01), Toida et al.
patent: 4167555 (1979-09-01), Gomes et al.
patent: 4224137 (1980-09-01), Schroeder
patent: 4228033 (1980-10-01), Yamauchi et al.
patent: 4243639 (1981-01-01), Haas et al.
patent: 4296077 (1981-10-01), Heuer et al.
patent: 4374100 (1983-02-01), Sefenik et al.

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